Current forecasts for Chongqing on September 30 point to a daily maximum near 24°C, driven by widespread cloud cover, light to moderate rain, and high humidity that suppress daytime heating. Regional models show persistent overcast skies and precipitation totals supporting only modest diurnal rises from overnight lows around 21–23°C, aligning with historical late-September patterns under similar synoptic conditions. This setup produces the tight trader consensus at the 24°C threshold. A sudden break in cloud cover or delayed rain onset could allow greater solar insolation and push readings higher, while localized heavy downpours or station-specific measurement differences might cap the official high below expectations.